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- <?php
- // +----------------------------------------------------------------------+
- // | PEAR :: File :: Passwd :: Authbasic |
- // +----------------------------------------------------------------------+
- // | This source file is subject to version 3.0 of the PHP license, |
- // | that is available at http://www.php.net/license/3_0.txt |
- // | If you did not receive a copy of the PHP license and are unable |
- // | to obtain it through the world-wide-web, please send a note to |
- // | license@php.net so we can mail you a copy immediately. |
- // +----------------------------------------------------------------------+
- // | Copyright (c) 2003-2004 Michael Wallner <mike@iworks.at> |
- // +----------------------------------------------------------------------+
- //
- // $Id: Authbasic.php,v 1.15 2004/06/07 19:19:47 mike Exp $
-
- /**
- * Manipulate AuthUserFiles as used for HTTP Basic Authentication.
- *
- * @author Michael Wallner <mike@php.net>
- * @package File_Passwd
- */
-
- /**
- * Requires File::Passwd::Common
- */
- require_once 'File/Passwd/Common.php';
-
- /**
- * Manipulate AuthUserFiles as used for HTTP Basic Authentication.
- *
- * <kbd><u>
- * Usage Example:
- * </u></kbd>
- * <code>
- * $htp = &File_Passwd::factory('AuthBasic');
- * $htp->setMode('sha');
- * $htp->setFile('/www/mike/auth/.htpasswd');
- * $htp->load();
- * $htp->addUser('mike', 'secret');
- * $htp->save();
- * </code>
- *
- * <kbd><u>
- * Output of listUser()
- * </u></kbd>
- * <pre>
- * array
- * + user => crypted_passwd
- * + user => crypted_passwd
- * </pre>
- *
- * @author Michael Wallner <mike@php.net>
- * @package File_Passwd
- * @version $Revision: 1.15 $
- * @access public
- */
- class File_Passwd_Authbasic extends File_Passwd_Common
- {
- /**
- * Path to AuthUserFile
- *
- * @var string
- * @access private
- */
- var $_file = '.htpasswd';
-
- /**
- * Actual encryption mode
- *
- * @var string
- * @access private
- */
- var $_mode = 'sha';
-
- /**
- * Supported encryption modes
- *
- * @var array
- * @access private
- */
- var $_modes = array('md5' => 'm', 'des' => 'd', 'sha' => 's');
-
- /**
- * Constructor
- *
- * @access public
- * @param string $file path to AuthUserFile
- */
- function File_Passwd_Authbasic($file = '.htpasswd')
- {
- File_Passwd_Authbasic::__construct($file);
- }
-
- /**
- * Constructor (ZE2)
- *
- * Rewritten because DES encryption is not
- * supportet by the Win32 httpd.
- *
- * @access protected
- * @param string $file path to AuthUserFile
- */
- function __construct($file = '.htpasswd')
- {
- if (strtoupper(substr(PHP_OS, 0, 3)) == 'WIN') {
- unset($this->_modes['des']);
- }
- $this->setFile($file);
- }
-
- /**
- * Fast authentication of a certain user
- *
- * Returns a PEAR_Error if:
- * o file doesn't exist
- * o file couldn't be opened in read mode
- * o file couldn't be locked exclusively
- * o file couldn't be unlocked (only if auth fails)
- * o file couldn't be closed (only if auth fails)
- *
- * @static call this method statically for a reasonable fast authentication
- *
- * @throws PEAR_Error
- * @access public
- * @return mixed true if authenticated, false if not or PEAR_Error
- * @param string $file path to passwd file
- * @param string $user user to authenticate
- * @param string $pass plaintext password
- * @param string $mode des, sha or md5
- */
- function staticAuth($file, $user, $pass, $mode)
- {
- $line = File_Passwd_Common::_auth($file, $user);
- if (!$line || PEAR::isError($line)) {
- return $line;
- }
- list(,$real) = explode(':', $line);
- $crypted = File_Passwd_Authbasic::_genPass($pass, $real, $mode);
- if (PEAR::isError($crypted)) {
- return $crypted;
- }
- return ($real === $crypted);
- }
-
- /**
- * Apply changes and rewrite AuthUserFile
- *
- * Returns a PEAR_Error if:
- * o directory in which the file should reside couldn't be created
- * o file couldn't be opened in write mode
- * o file couldn't be locked exclusively
- * o file couldn't be unlocked
- * o file couldn't be closed
- *
- * @throws PEAR_Error
- * @access public
- * @return mixed true on success or PEAR_Error
- */
- function save()
- {
- $content = '';
- foreach ($this->_users as $user => $pass) {
- $content .= $user . ':' . $pass . "\n";
- }
- return $this->_save($content);
- }
-
- /**
- * Add an user
- *
- * The username must start with an alphabetical character and must NOT
- * contain any other characters than alphanumerics, the underline and dash.
- *
- * Returns a PEAR_Error if:
- * o user already exists
- * o user contains illegal characters
- *
- * @throws PEAR_Error
- * @access public
- * @return mixed true on success or PEAR_Error
- * @param string $user
- * @param string $pass
- */
- function addUser($user, $pass)
- {
- if ($this->userExists($user)) {
- return PEAR::raiseError(
- sprintf(FILE_PASSWD_E_EXISTS_ALREADY_STR, 'User ', $user),
- FILE_PASSWD_E_EXISTS_ALREADY
- );
- }
- if (!preg_match($this->_pcre, $user)) {
- return PEAR::raiseError(
- sprintf(FILE_PASSWD_E_INVALID_CHARS_STR, 'User ', $user),
- FILE_PASSWD_E_INVALID_CHARS
- );
- }
- $this->_users[$user] = $this->_genPass($pass);
- return true;
- }
-
- /**
- * Change the password of a certain user
- *
- * Returns a PEAR_Error if user doesn't exist.
- *
- * @throws PEAR_Error
- * @access public
- * @return mixed true on success or a PEAR_Error
- * @param string $user the user whose password should be changed
- * @param string $pass the new plaintext password
- */
- function changePasswd($user, $pass)
- {
- if (!$this->userExists($user)) {
- return PEAR::raiseError(
- sprintf(FILE_PASSWD_E_EXISTS_NOT_STR, 'User ', $user),
- FILE_PASSWD_E_EXISTS_NOT
- );
- }
- $this->_users[$user] = $this->_genPass($pass);
- return true;
- }
-
- /**
- * Verify password
- *
- * Returns a PEAR_Error if:
- * o user doesn't exist
- * o an invalid encryption mode was supplied
- *
- * @throws PEAR_Error
- * @access public
- * @return mixed true if passwords equal, false if they don't, or PEAR_Error
- * @param string $user the user whose password should be verified
- * @param string $pass the plaintext password to verify
- */
- function verifyPasswd($user, $pass)
- {
- if (!$this->userExists($user)) {
- return PEAR::raiseError(
- sprintf(FILE_PASSWD_E_EXISTS_NOT_STR, 'User ', $user),
- FILE_PASSWD_E_EXISTS_NOT
- );
- }
- $real = $this->_users[$user];
- return ($real === $this->_genPass($pass, $real));
- }
-
- /**
- * Get actual encryption mode
- *
- * @access public
- * @return string
- */
- function getMode()
- {
- return $this->_mode;
- }
-
- /**
- * Get supported encryption modes
- *
- * <pre>
- * array
- * + md5
- * + sha
- * + des
- * </pre>
- *
- * ATTN: DES encryption not available on Win32!
- *
- * @access public
- * @return array
- */
- function listModes()
- {
- return array_keys($this->_modes);
- }
-
- /**
- * Set the encryption mode
- *
- * You can choose one of md5, sha or des.
- *
- * ATTN: DES encryption not available on Win32!
- *
- * Returns a PEAR_Error if a specific encryption mode is not supported.
- *
- * @throws PEAR_Error
- * @access public
- * @return mixed true on succes or PEAR_Error
- * @param string $mode
- */
- function setMode($mode)
- {
- $mode = strToLower($mode);
- if (!isset($this->_modes[$mode])) {
- return PEAR::raiseError(
- sprintf(FILE_PASSWD_E_INVALID_ENC_MODE_STR, $this->_mode),
- FILE_PASSWD_E_INVALID_ENC_MODE
- );
- }
- $this->_mode = $mode;
- return true;
- }
-
- /**
- * Generate password with htpasswd executable
- *
- * @access private
- * @return string the crypted password
- * @param string $pass the plaintext password
- * @param string $salt the salt to use
- * @param string $mode encyption mode, usually determined from
- * <var>$this->_mode</var>
- */
- function _genPass($pass, $salt = null, $mode = null)
- {
- $mode = is_null($mode) ? strToLower($this->_mode) : strToLower($mode);
-
- if ($mode == 'md5') {
- return File_Passwd::crypt_apr_md5($pass, $salt);
- } elseif ($mode == 'des') {
- return File_Passwd::crypt_des($pass, $salt);
- } elseif ($mode == 'sha') {
- return File_Passwd::crypt_sha($pass, $salt);
- }
-
- return PEAR::raiseError(
- sprintf(FILE_PASSWD_E_INVALID_ENC_MODE_STR, $mode),
- FILE_PASSWD_E_INVALID_ENC_MODE
- );
- }
-
- /**
- * Parse the AuthUserFile
- *
- * Returns a PEAR_Error if AuthUserFile has invalid format.
- *
- * @throws PEAR_Error
- * @access public
- * @return mixed true on success or PEAR_error
- */
- function parse()
- {
- $this->_users = array();
- foreach ($this->_contents as $line) {
- $user = explode(':', $line);
- if (count($user) != 2) {
- return PEAR::raiseError(
- FILE_PASSWD_E_INVALID_FORMAT_STR,
- FILE_PASSWD_E_INVALID_FORMAT
- );
- }
- $this->_users[$user[0]] = trim($user[1]);
- }
- $this->_contents = array();
- return true;
- }
-
- /**
- * Generate Password
- *
- * Returns PEAR_Error FILE_PASSD_E_INVALID_ENC_MODE if the supplied
- * encryption mode is not supported.
- *
- * @static
- * @access public
- * @return mixed The crypted password on success or PEAR_Error on failure.
- * @param string $pass The plaintext password.
- * @param string $mode The encryption mode to use (des|md5|sha).
- * @param string $salt The salt to use.
- */
- function generatePassword($pass, $mode = FILE_PASSWD_DES, $salt = null)
- {
- if (!in_array(strToLower($mode), array('des', 'md5', 'sha'))) {
- return PEAR::raiseError(
- sprintf(FILE_PASSWD_E_INVALID_ENC_MODE_STR, $mode),
- FILE_PASSWD_E_INVALID_ENC_MODE
- );
- }
- return File_Passwd_Authbasic::_genPass($pass, $salt, $mode);
- }
-
- }
- ?>